Product description
The Mark ED Series is intended for general control applications over a wide variety of temperatures and pressure drops. This design has an upper piston ring seal and metal-to-metal seating.
The Mark ET Series is intended for applications requiring low leakage rates with composition seating (TFE) for tight shutoff requirements or metal-to-metal seating for higher temperature capabilities. The valve plug has a two-piece upper seal.
Control valve MK EW
Size
- 8×6, 10×8, 12×6, 12×8, 16×12, 20×16, 24×16, 24×20
Body Material
- LCC, WCB, WCC, WC9, C5, Monel, CF8M SST, additional materials may be available upon request
End Connections
- ASME Class 150 through 900
- Raised face, Ring Type Joint and welded flanges
Seat Materials
- Metal, TFE
Trim Material
- Standard: 316 Stainless Steel
- Optional Material: Alloy 6, Cobalt, Tungsten Carbide
Shutoff
- Mark EWD: Class II, III & IV
- Mark EWS: Class IV, V & VI
- Mark EWT: Class IV & V
Max. Inlet Pressures/Temperatures
- All Mark EWD, EWS & EWT Series: Do not exceed conditions specified when valve was ordered. Valve is configured in accordance with Class 300, 600 or 900 pressure temperature ratings per ANSI B16.34 – latest
- Class 600: Some flanged Class 600 bodies in 316SST do not comply with ASME B16.34. Consult Jordan Valve
Max Pressure Drop
- Class 900 size 8×6 Mark EWD, EWS and EWT Series valves are limited to Class 600 pressure drops and temperature limits
Flow Characteristics
- Linear, Quick Opening, Equal Percentage, Noise Abatement, Anti-Cavitation
Flow Direction
- Mark EWS: Normally up
- Mark EWD and EWT: Normally down
Valve Travel Indication
- valves are supplied with visual travel indicator
Features and Benefits
- Characterized flow options including equal percentage, linear, and quick opening
- Available in a variety of body and trim materials, the Mark EW Series is suitable for a variety of applications including liquids, gasses or steam
- Anti-Cavitation trim and Noise Abatement trim available
- Sour service capability: Optional NACE MRO175/ISO 15156-2009
- Tight shutoff
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